Seam or joint for wire cloth



Oct. 19 1926. 1,603,687

. w. D. 'r. GREEN SEAM OR JOINT FOR WIRE CLOTH Filed July 7 1925 F/GJ'.

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Patented @ett. 19, 1926 OFFICE WILLIE DUNSTAN THEODORE GREEN, OIE EDINBURGH, SCOTLAND.

SEAIVI OB JOINT FOR WIRE CLOTH.

Application -filed July 7, 1925, Serial No. 42,027, and in Great Britain August 18, 1924.

below the surfaces of the sheet, while at the same time the mesh at the joint is such as r to give a free drainage, and as the joint forms an integral part of the sheet the life of the former more closely approaches that of the latter.

According to this invention the seam or .joint is formed by securing the projecting ends of thewarp wires of one end of the sheet, to the last shot wire of the other end of the sheet, and permanently securing the ends of the warps to said shot wire, substantially as hereinafter described.

In order that the warp wires at one end of the sheet may be left projecting so that the last shot wire of the other end of the sheet may be inserted, the end shot wire, at

the first-mentioned end of the sheet, may be removed, and the ends of the warp may be opened sufficiently by means of a suitable tool such as a in or point.

Electric wel ing or other suitable forms of Welding may be used to complete the joints, or they may be completed by soldering, brazing, or the like. I

In order that the said invention and the manner of performing the same may be properly understood, I hereunto append a sheet of explanatory drawings to be hereinafter referred to in describing'the invention,

and in which Figure 1 is a plan of a part of a sheet or band, with the ends ready to be joined, and Fig. 2 is an edge view showing the shot or weft wires in section. Figs. 3 and 4 are views similar to Figs. 1 and 2, but showing the ends of the sheet in their joined position. In these drawings the same reference numerals are used to mark the same or like parts wherever they'occur.

As shown the ends of the warp wires 5 of that part of the sheet or band on the right-hand side of Figs. 1 and 2, are prolonged beyond the first shown shot wire 6. This may be effected by withdrawing a shot wire in advance of the shot wire 6, or a predetermined excess length of these wires 5 (beyond the shot wire 6) may have been allowed for when weaving the sheet. The projecting ends 7 and 8, of the warp wires 5, are opened out as shown in Fig. 2, so as to form a channel or space 9, which when the ends of the sheet are brought together, over- 10, but in a direction opposite to the adjoining warp wires 11 of the other end of the sheet. The partially formed joint is completed by tapping the ends of the wires 5 inwards and securing or uniting the ends of the warp 'wires 5 and 11 to the shot wire 10' by the application of heat, such,'for example, as electric-welding, brazing, or by soldering.

By constructing a seam or joint as just described. the flexibility .of the sheet is not interfered with, and no portion of it projects above or below the surfaces of the sheet; the use of joining, seaming, coupling, or edging wires is eliminated, and the mesh at the joint is practically as free or open as the mesh of the remainder of the sheet, thus giving a free drainage; and further the shot wires at I and adjoining the seam and throughout the sheet are equidistant.

What I claim is:

A continuous wire cloth for paper-making machines having its two ends brought adj acent one another and so that the warp wires of both ends overlap alternately without hooking on the top and bottom of a common WILLIE DUNSTAN THEODORE GREEN- 

